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Autoradiograms of S. litura larvae, of given times after feeding on an (A) [U-14C]glutamine-, (B) [U-14C]glutamic acid-, or (C) α-[1-14C]linolenic acid-enriched diet. Each image was a longitudinal section of larvae displayed with the cephalic end to the Left. CR, crop; HG, hindgut; MG, midgut; FB, fat body.
